poundsofpressure
Not English
Poundsofpressure has no English definition. It may be misspelled.
isobar
Noun
(
en noun)
(meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
(nuclear physics) Either of two nuclides of different elements having the same mass number.
(thermodynamics) A set of points or conditions at constant pressure.
Usage notes
* (meteorology)
*: In meteorology, the term isobar''''' most often refers to a line drawn through connected points of equal atmospheric pressure on a given reference surface — such as a constant height surface (notably mean-sea-level on surface charts), the vertical plane of a synoptic cross section, or a layer of the air unaffected by surface heating or cooling. The pattern of '''isobars''' has always been a main feature of '''surface chart analysis'''. (See (Surface weather analysis)) Until recently it was standard procedure to draw isobars at 3-millibar intervals. However, the advent of constant pressure charts for upper-air analysis has brought about the use of ' 4-millibar intervals to simplify the conversion from surface isobars to 1,000-millibar contour lines.
See also
* adiabat
* isobaric
* isochore
* isopleth
* isotherm
* isotone
* isotope
----
